Помогите)))

только кислоты расположены в ряду:

1) CuSO4,CuOHCL,HCL

2)HBr,H2Se,KOH

3)KHS,HCL,CaOHCL

4)HCLO4,H2CrO4,H2SiO3

 спасибо!

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